WO2015156603A1 - Appareil d'imagerie à rayons x détectant des mouvements d'un sujet d'imagerie - Google Patents

Appareil d'imagerie à rayons x détectant des mouvements d'un sujet d'imagerie Download PDF

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Publication number
WO2015156603A1
WO2015156603A1 PCT/KR2015/003533 KR2015003533W WO2015156603A1 WO 2015156603 A1 WO2015156603 A1 WO 2015156603A1 KR 2015003533 W KR2015003533 W KR 2015003533W WO 2015156603 A1 WO2015156603 A1 WO 2015156603A1
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WO
WIPO (PCT)
Prior art keywords
photographing
ray
target
movement
unit
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Application number
PCT/KR2015/003533
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English (en)
Korean (ko)
Inventor
최성일
임형근
전진표
Original Assignee
주식회사 바텍
(주) 바텍이우홀딩스
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Publication of WO2015156603A1 publication Critical patent/WO2015156603A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor

Definitions

  • the present invention relates to an X-ray photographing apparatus for detecting a motion of a photographing target. Specifically, the present invention relates to an X-ray photographing apparatus for minimizing re-photographing, improving the quality of an X-ray image, and minimizing exposure of a photographing subject by detecting the motion of the photographing target. It relates to an X-ray photographing apparatus for detecting the.
  • the X-ray imaging apparatus is a device for implementing a two-dimensional projection image or a three-dimensional CT image using the transmission characteristics of the X-ray, and is provided with a generator for irradiating X-rays and a detector for receiving the X-ray image of the human body part of the patient You can shoot with.
  • the generator and the detector of the X-ray photographing apparatus were conventionally used in a fixed form, but recently, the generator and the detector have a structure in which the generator and the detector are rotated to face each other, thereby obtaining a 2D projection image from various angles and reconstructing it into a 3D CT image. have.
  • FIG. 1 is a flowchart illustrating a conventional X-ray photographing method.
  • the photographing unit is positioned at the starting point of the X-ray photographing apparatus in a state in which the photographing object is spaced apart from the X-ray apparatus.
  • the photographing unit means a generator and a detector (S10).
  • the photographing target enters the photographing region between the generator and the detector (S20), after alignment of the posture (S30), and in the case of dentistry, the head of the photographing subject is fixed (S40).
  • the generator and the detector start to face the X-rays and rotate oppositely.
  • the head or body part of the photographing object collides with the X-ray photographing apparatus according to the alignment state of the body size or posture of the photographing object.
  • the X-ray image is obtained as a result from the projection data acquired by the detector of the X-ray photographing apparatus. At this time, the quality of the X-ray image is greatly degraded or the acquisition itself is impossible due to the movement of the photographing object. The situation that should be occurred frequently (S70).
  • the X-ray imaging apparatus used in dentistry requires an X-ray image of the head of the patient's teeth, jaw, and the like.
  • the head part easily moves and the child turns his head, such as turning his head. Therefore, there was a problem that should be retaken frequently.
  • the re-photographing of the X-ray image causes a problem of increasing the exposure of the radiation target and increasing the time consumption of the X-ray imaging.
  • the present inventors have made efforts to improve the quality of the X-ray image and minimize the re-photographing and the exposure of the photographing object when the X-ray image is taken, and thus, to develop the technical configuration of the X-ray photographing apparatus for detecting the movement of the photographing object, the present invention is completed. Was done.
  • an object of the present invention is to provide an X-ray photographing apparatus that detects the movement of a photographing subject, which can immediately identify the movement of the photographing subject and can confirm in advance whether a collision between the photographing subject and the photographing apparatus is achieved.
  • another object of the present invention is to provide an X-ray photographing apparatus for detecting the movement of the photographing target to move the photographing apparatus according to the movement of the photographing target to prevent the acquisition failure of the X-ray image.
  • An x-ray photographing unit including an x-ray generator and a detector to achieve the above object;
  • a photographing object sensing unit sensing at least one of a size and a movement of a photographing object located at a photographing position between the X-ray generator and the detector;
  • a photographing controller configured to control an operation of the X-ray photographing unit according to at least one of the size and the movement of the photographing object measured by the photographing object detecting unit.
  • the photographing object detecting unit photographing target support means in close contact with a specific portion of the photographing target; And a photographing target movement measuring unit configured to measure a movement of the photographing target by sensing a movement of the photographing target supporting means.
  • the photographing control unit further includes a photographing target position determination means for determining whether or not the photographing target is in the correct position as a result of the detection of the photographing target motion measuring means.
  • the photographing control unit the X-ray photographing unit control means for moving the center position of the X-ray photographing unit when the photographing object is out of the fixed position;
  • the photographing control unit, the X-ray photographing unit stop means for stopping the operation of the X-ray photographing unit when the photographing object is out of the correct position; further includes.
  • the photographing controller further includes a warning signal generating means for generating a warning signal for recommending stopping of the X-ray photographing when the photographing object is out of a fixed position.
  • the photographing object detecting unit photographing target support means in close contact with a specific portion of the photographing target; And a photographing target motion measuring means for detecting a movement of the photographing target support means, including at least one of a sensor, a detector, and a camera. It includes.
  • the present invention also provides an X-ray photographing unit including an X-ray generator and a detector; And a photographing object sensing unit configured to sense at least one of a size and a movement of a photographing object located at a photographing position between the X-ray generator and the detector, wherein the photographing object sensing unit is physically connected to or separated from the X-ray photographing unit.
  • Photographing target support means in close contact with a specific portion of the photographing subject;
  • an x-ray photographing apparatus for detecting a movement of the photographing target, including at least one of a sensor, a detector, and a camera.
  • the present invention has the following excellent effects.
  • the X-ray photographing apparatus for detecting the movement of the photographing target in the situation that X-ray imaging is in progress to immediately detect the movement of the photographing to stop the X-ray imaging or move the position of the X-ray photographing unit Or generate a warning signal, it is possible to prevent the failure and quality deterioration of the X-ray image in advance, and to reduce the number of retakes.
  • the X-ray photographing apparatus for detecting the movement of the object to be photographed according to an embodiment of the present invention, before starting the X-ray imaging, it is possible to check whether the collision between the X-ray photographing unit and the photographing target in advance, The effect of preventing reshooting due to a collision can be obtained in advance.
  • 1 is a flow chart showing a conventional X-ray photographing method.
  • FIGS. 2 and 3 are views showing an x-ray imaging apparatus according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating an x-ray photographing method using an x-ray photographing apparatus according to an embodiment of the present invention.
  • the X-ray imaging apparatus may fail to acquire X-ray images or deteriorate the quality of the X-ray image due to the movement of the object by stopping the X-ray photographing or generating a warning signal to allow the photographing person to recognize the movement of the photographing object. Can be prevented in advance and reshooting can be minimized, thereby minimizing the exposure of the subject.
  • the X-ray imaging apparatus can be used for obtaining an X-ray image in various medical fields, in particular, it can be used to obtain an X-ray image of the oral cavity and teeth of the patient in the dentist.
  • the photographing object refers to a part of the patient, in particular, the head of the patient to be photographed by the X-ray image.
  • FIGS. 2 and 3 are views showing an X-ray imaging apparatus according to an embodiment of the present invention.
  • the X-ray photographing apparatus is configured to detect the movement of the photographing target in real time when the X-ray image is captured and to move the position of the photographing apparatus itself according to the movement of the photographing target.
  • the photographing apparatus may include an X-ray photographing unit 110, a photographing target detecting unit 120, and a photographing control unit 130.
  • the X-ray photographing unit 110 is to obtain X-ray images by emitting X-rays toward a photographing target, and an X-ray generator 111 for emitting X-rays and a detector for detecting X-rays emitted from the X-ray generator 111. 112 is provided.
  • the X-ray generator 111 may include one or more individual light sources for generating X-rays, and the detector 112 may include one or more image sensors for detecting X-rays.
  • the X-ray photographing unit 110 may be moved up, down, left, and right by separate supporting means (not shown), and the X-ray photographing unit 110 may be controlled by the photographing controller 130 to be described later.
  • the position is configured to be movable.
  • the X-ray imaging unit 110 is configured such that the X-ray generator 111 and the detector 112 are rotated to face each other with respect to a photographing object while the X-ray generator 111 and the detector 112 face each other. Can be.
  • the X-ray photographing unit 110 acquires a two-dimensional projection image based on projection data of the photographing target, or rotates the X-ray generator 111 and the detector 112 based on the photographing target to project in multiple directions. It may be configured to acquire data and reconstruct it into a 3D CT image.
  • the photographing object detecting unit 120 detects the movement and the degree of movement of the photographing object, and the degree of the photographing object located at the photographing position between the X-ray generator 111 and the detector 112 is moved and photographing. It is provided to measure the detailed dimensions such as the width and size of the object, and includes a photographing target support means 121, a photographing target motion measuring means 122, and a photographing target motion limiting means 123.
  • the photographing object detecting unit 120 outputs the motion information and the dimension information of the photographing object as an electrical signal so that the photographing controller 130 to be described later may determine the motion information and the dimension information of the photographing object.
  • the photographing target support means 121 is for supporting or fixing to a specific portion of the photographing target or for supporting or fixing a specific portion of the photographing target. Or it can be provided with a predetermined
  • the instrument is fixed, for example, one end is coupled to a predetermined position of the X-ray photographing apparatus as shown in Figure 3, and the other end is in close contact with a specific part of the object to be photographed, for example, left and right temples or ears. Temple support or ear rod may be used.
  • the photographing target support means 121 is provided to be rotatable or rotatable in accordance with the movement of the photographing subject, and is preferably configured to rotate around a rotation axis of one end in accordance with the movement of the photographing subject.
  • the photographing target support means 121 is provided in at least one pair in close contact with the left and right of the photographing target to reflect both the left, right movement or the up and down movement of the photographing target.
  • the photographing target supporting means 121 is adapted to the width and size of the photographing subject. As a result, it rotates at a predetermined angle and opens and moves or rotates accordingly even when the photographing target is moved.
  • the photographing target supporting means 121 may be configured as a separate mechanism that is physically separated from the X-ray photographing apparatus and adheres to a specific portion of the photographing subject, for example, the head.
  • the photographing target motion measuring unit 122 is for detecting or measuring the motion of the photographing target, and is provided to detect the movement and the degree of movement of the photographing target supporting means 121 that moves substantially in accordance with the motion of the photographing target. do.
  • the photographing target movement measuring means 122 may be disposed at a predetermined position of the photographing target supporting means 121 or spaced apart from the photographing target supporting means 121, and the photographing target supporting means 121 is provided. The moving distance according to the movement of the will be measured.
  • the photographing target motion measuring unit 122 may be provided with various types of sensors, detectors, or cameras capable of detecting or measuring a change in motion, distance, angle, and the like.
  • the photographing target support means 121 is provided as a distance sensor capable of measuring a moving distance when the moving object is moved away from or close to it as an electric signal.
  • the photographing target motion measuring unit 122 collectively refers to all means capable of optically or electrically detecting or measuring a change in the movement, distance, angle, etc. of the photographing target supporting means 121.
  • the photographing target movement measuring means 122 measures the movement distance by the movement of the photographing target support means 121 in real time and outputs the electrical signal.
  • the recording target motion limiting means 123 is for limiting the degree of movement of the recording target so as not to disturb the operation of the X-ray photographing unit 110, and substantially the movement of the recording target support means 121 Or it has a function which limits the degree of rotation to within a preset range.
  • the photographing target movement limiting means 123 is fixedly disposed on the copper line of the photographing target supporting means 121 to limit the angle at which the photographing target supporting means 121 moves or rotates. Therefore, the degree of movement of the photographing object is indirectly limited so as not to deviate from the preset range.
  • the photographing target movement limiting means 123 may be a fixing protrusion disposed on a copper line in which the photographing target supporting means 121 rotates, or may be provided as a fixed shaft or a fixing wall.
  • the photographing control unit 130 controls the operation of the X-ray photographing unit 110, and the X-ray photographing unit 110 according to the movement or the degree of movement of the photographing object measured by the photographing object detecting unit 120. It is provided to control the operation or to generate a warning signal, the target position determination means 131, X-ray imaging unit control unit 132, X-ray imaging unit stop means 133 and warning signal generation means 134 It includes.
  • the photographing control unit 130 controls the x-ray photographing unit 110 when a photographing target is out of a fixed position and a re-capture or an X-ray image acquisition failure is expected.
  • the position target position determination means 131 receives the movement distance of the target object support means 121 measured by the target movement measurement means 122 to calculate the degree of movement of the object to shoot the exact position range Determine if you are within or out of position.
  • the photographing target position determining unit 131 determines whether the photographing position is correct by calculating whether the moving distance is within a preset threshold or out of the threshold. It is provided to.
  • the control signal is output to prevent the failure of acquisition of the X-ray image, the deterioration of quality, and the rephotography.
  • the photographing target position determining means 131 calculates detailed dimensions such as the width and size of the photographing subject detected by the photographing target supporting means 121, The collision between the X-ray photographing unit 110 is determined and output as a control signal.
  • the photographing target position determination unit 131 may be a program function to compare and calculate the degree of movement of the photographing target measured by the photographing target motion measuring unit 122 with a preset threshold.
  • the X-ray photographing unit control means 132 controls the X-ray photographing unit 110 according to a control signal output from the photographing target position determination means 131.
  • the X-ray photographing unit control means 132 moves the position of the X-ray photographing unit 110 so that the photographing target can be positioned at the correct position.
  • the width of the photographing subject and The X-ray photographing unit 110 may be properly moved by the X-ray photographing unit 110 by judging whether the photographing object collides with the X-ray photographing unit 110 according to the detailed dimensions such as the size, or the distance moved by the photographing object during X-ray photographing. The center position of will be moved left and right.
  • the X-ray photographing unit control unit 132 may be provided to receive information, such as a distance of the photographing target, from the photographing target position determination means 131.
  • the X-ray photographing unit control means 132 may be a program functioning to control the movement of the X-ray photographing unit 110 according to a control signal output from the photographing target position determination means 131.
  • the X-ray photographing unit stop means 133 is provided to stop the operation of the X-ray photographing unit 110 when the photographing object is out of the correct position.
  • the X-ray photographing unit stop unit 133 may operate when the X-ray photographing unit 110 is capturing an X-ray image when the movement of a photographing object is largely out of the threshold value or the quality of the X-ray image is deteriorated and the acquisition failure is expected. It is provided to stop.
  • X-ray photographing unit stop means 133 may be provided as a program function to stop the operation of the X-ray photographing unit 110 according to the control signal output from the photographing target position determination means 131. Can be.
  • the warning signal generating means 134 generates a warning signal for recommending the stopping of the X-ray photographing when the photographing object is out of the fixed position, so that the photographing subject can recognize the motion of the photographing object.
  • the warning signal generating unit 134 may function to output the warning signal as a sound to a sound output means such as a speaker, or to output the warning signal as a warning message on a screen such as a monitor. It can be provided by a program.
  • the warning signal generating means 134 enables the photographing operator to recognize the movement of the photographing target in advance, so as to stop the X-ray photographing of the photographing target or to operate the X-ray photographing unit 110.
  • the photographing target position determination means 131 the X-ray photographing unit control unit 132, the X-ray photographing unit stop unit 133, and the warning signal generating unit 134 configured in the photographing control unit 130.
  • Each may be provided as a plurality of programs that operate individually, or as a single program having individual functions.
  • FIG. 4 is a flowchart illustrating an X-ray photographing method using an X-ray photographing apparatus according to an exemplary embodiment of the present invention.
  • the X-ray generator and the detector of the X-ray photographing unit are moved to a starting point position while the photographing target is spaced apart from the X-ray photographing unit (S110).
  • the photographing target enters between the X-ray generator and the detector (S120), and the photographing host aligns the posture of the photographing subject (S130).
  • the photographing target support means may be a separate mechanism fixed to the head of the photographing subject in a state separated from the X-ray photographing apparatus.
  • the photographing control unit receives the gap of the photographing target support means from the photographing target motion measuring means, and calculates in advance whether there is a collision between the photographing subject and the X-ray photographing unit.
  • the posture of the shooting target may be rearranged and X-ray imaging may be performed (S150).
  • the X-ray photographing unit may be moved to prevent collision with the photographing target, and the X-ray photographing unit may be moved by the photographing controller.
  • the X-ray generator and the detector rotate to proceed with X-ray photographing.
  • the photographing target supporting means moves according to the movement of the photographing subject, so that the photographing controller moves the photographing subject in real time. You can check it.
  • the X-ray photographing is immediately stopped, or a warning signal is generated so that the photographing person can recognize it (S160).
  • the X-ray image is obtained as a result from the projection data acquired by the detector of the X-ray photographing unit.
  • the X-ray photographing is performed in a state in which there is no movement of the photographing object, so that the quality of the X-ray image may be reduced or the acquisition failure may be minimized. Will be.
  • the X-ray imaging apparatus can detect the movement of the shooting object in real time and calculate the real-time motion information of the shooting object as a quantitative value, it is also possible to correct the X-ray image by reflecting the value in the X-ray image Do.
  • X-ray imaging apparatus of the present invention can be used as a medical x-ray imaging apparatus, in particular can be used for dental x-ray imaging apparatus.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Apparatus For Radiation Diagnosis (AREA)

Abstract

La présente invention se rapporte à un appareil d'imagerie à rayons X qui détecte les mouvements du sujet d'imagerie et, plus particulièrement, à un appareil d'imagerie à rayons X qui réduit à un minimum une ré-imagerie, améliore la qualité de l'image à rayons X, et réduit à un minimum l'exposition au rayonnement pour le sujet d'imagerie par détection des mouvements du sujet d'imagerie.
PCT/KR2015/003533 2014-04-08 2015-04-08 Appareil d'imagerie à rayons x détectant des mouvements d'un sujet d'imagerie WO2015156603A1 (fr)

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KR20140041729 2014-04-08
KR10-2014-0041729 2014-04-08

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Cited By (4)

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CN113226213A (zh) * 2019-06-27 2021-08-06 登士柏希罗纳有限公司 口腔内咬合设备和通过使用该口腔内咬合设备记录患者的解剖特征的方法
EP3733074A4 (fr) * 2017-12-28 2021-08-25 J. Morita Manufacturing Corporation Dispositif d'imagerie ct par raxons x
EP3603524B1 (fr) * 2018-08-03 2021-11-17 De Gotzen S.r.l. Dispositif d'imagerie numerique dans la tete d'un patient
WO2022250263A1 (fr) * 2021-05-26 2022-12-01 주식회사바텍 Dispositif et procédé permettant de former une image de tomodensitométrie en spirale, capable de détecter un mouvement d'un sujet

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CN113226213B (zh) * 2019-06-27 2024-03-15 登士柏希罗纳有限公司 口腔内咬合设备和通过使用该口腔内咬合设备记录患者的解剖特征的方法
WO2022250263A1 (fr) * 2021-05-26 2022-12-01 주식회사바텍 Dispositif et procédé permettant de former une image de tomodensitométrie en spirale, capable de détecter un mouvement d'un sujet
KR20220159771A (ko) * 2021-05-26 2022-12-05 주식회사바텍 피검체의 움직임 검출이 가능한 스파이럴 ct 영상 형성 장치 및 방법
KR102610610B1 (ko) * 2021-05-26 2023-12-06 주식회사 바텍 피검체의 움직임 검출이 가능한 스파이럴 ct 영상 형성 장치 및 방법

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